CVE-2025-7739 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab

High 8.7 Published 13 Aug 2025 Updated 13 Aug 2025

Authenticated users can inject malicious HTML into scoped label descriptions, enabling stored cross-site scripting attacks against other users.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: Available

What is CVE-2025-7739?

CVE-2025-7739 is a high-severity cross-site scripting vulnerability in Gitlab Gitlab, published on 13 Aug 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

An issue has been discovered in GitLab CE/EE affecting all versions from 18.2 before 18.2.2 that, under certain conditions, could have allowed authenticated users to achieve stored cross-site scripting by injecting malicious HTML content in scoped label descriptions.

Weakness: CWE-79

Which versions are affected by CVE-2025-7739?

1 open source package ship an affected version, including gitlab. It affects 1 product.

Package	Affected	Fixed in
`gitlab` Bitnami	From `18.2.0`	`18.2.2`

Products include Gitlab Gitlab.

How do I fix CVE-2025-7739?

Upgrade gitlab to 18.2.2 or later.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2025-7739 being exploited?

There is no known exploitation of CVE-2025-7739 in the wild and no public exploit code.

All Gitlab Gitlab vulnerabilities

Sources

Also known as BIT-gitlab-2025-7739, GHSA-4h46-82xr-4j7x, MINI-wcq2-pp24-xvp8, UBUNTU-CVE-2025-7739.